Undo bcdedit set from uefi or ubuntu












0















I'm trying to install ubuntu in dual boot along with windows 10. I have two hard disks. Windows is already installed in disk0. Then I installed ubuntu 18.04 LTS in disk0 after windows. Both were working fine. But every time I restart, it used to load windows by default. To enable grub, I found the below command and executed in windows command prompt with administrator privilages



bcdedit /set {bootmgr} path EFIubuntugrubx64.efi


After this, whenever I reboot, it opens Grub command line.
If I go to bios/uefi, I can start ubuntu from there or I can select Windows Boot Manager. Ubuntu is working fine, but if I select Windows Boot Manager, again I get into Grub command line. So, I'm not able to boot windows at all.



How to fix this? I found a command to undo bcdedit



bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi


But to execute this, I need to be in windows right? So, I'm not able to execute this command. Is there a way to perform this action from bios/uefi (Asus computer) or from the ubuntu? (Ubuntu is booting fine)



Or is there any other method? I'm open to all suggestions.



Additional Info: Also, I installed grub2 and now I'm able to see grub bootloader after restart. Here, I get 2 options: ubuntu and windows (from sda2). If I select Ubuntu, ubuntu loads fine. But if I select windows, I get an error saying invalid signature



Edit 01:
I ran boot-repair tool. The details are in this paste ubuntu










share|improve this question





























    0















    I'm trying to install ubuntu in dual boot along with windows 10. I have two hard disks. Windows is already installed in disk0. Then I installed ubuntu 18.04 LTS in disk0 after windows. Both were working fine. But every time I restart, it used to load windows by default. To enable grub, I found the below command and executed in windows command prompt with administrator privilages



    bcdedit /set {bootmgr} path EFIubuntugrubx64.efi


    After this, whenever I reboot, it opens Grub command line.
    If I go to bios/uefi, I can start ubuntu from there or I can select Windows Boot Manager. Ubuntu is working fine, but if I select Windows Boot Manager, again I get into Grub command line. So, I'm not able to boot windows at all.



    How to fix this? I found a command to undo bcdedit



    bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi


    But to execute this, I need to be in windows right? So, I'm not able to execute this command. Is there a way to perform this action from bios/uefi (Asus computer) or from the ubuntu? (Ubuntu is booting fine)



    Or is there any other method? I'm open to all suggestions.



    Additional Info: Also, I installed grub2 and now I'm able to see grub bootloader after restart. Here, I get 2 options: ubuntu and windows (from sda2). If I select Ubuntu, ubuntu loads fine. But if I select windows, I get an error saying invalid signature



    Edit 01:
    I ran boot-repair tool. The details are in this paste ubuntu










    share|improve this question



























      0












      0








      0








      I'm trying to install ubuntu in dual boot along with windows 10. I have two hard disks. Windows is already installed in disk0. Then I installed ubuntu 18.04 LTS in disk0 after windows. Both were working fine. But every time I restart, it used to load windows by default. To enable grub, I found the below command and executed in windows command prompt with administrator privilages



      bcdedit /set {bootmgr} path EFIubuntugrubx64.efi


      After this, whenever I reboot, it opens Grub command line.
      If I go to bios/uefi, I can start ubuntu from there or I can select Windows Boot Manager. Ubuntu is working fine, but if I select Windows Boot Manager, again I get into Grub command line. So, I'm not able to boot windows at all.



      How to fix this? I found a command to undo bcdedit



      bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi


      But to execute this, I need to be in windows right? So, I'm not able to execute this command. Is there a way to perform this action from bios/uefi (Asus computer) or from the ubuntu? (Ubuntu is booting fine)



      Or is there any other method? I'm open to all suggestions.



      Additional Info: Also, I installed grub2 and now I'm able to see grub bootloader after restart. Here, I get 2 options: ubuntu and windows (from sda2). If I select Ubuntu, ubuntu loads fine. But if I select windows, I get an error saying invalid signature



      Edit 01:
      I ran boot-repair tool. The details are in this paste ubuntu










      share|improve this question
















      I'm trying to install ubuntu in dual boot along with windows 10. I have two hard disks. Windows is already installed in disk0. Then I installed ubuntu 18.04 LTS in disk0 after windows. Both were working fine. But every time I restart, it used to load windows by default. To enable grub, I found the below command and executed in windows command prompt with administrator privilages



      bcdedit /set {bootmgr} path EFIubuntugrubx64.efi


      After this, whenever I reboot, it opens Grub command line.
      If I go to bios/uefi, I can start ubuntu from there or I can select Windows Boot Manager. Ubuntu is working fine, but if I select Windows Boot Manager, again I get into Grub command line. So, I'm not able to boot windows at all.



      How to fix this? I found a command to undo bcdedit



      bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi


      But to execute this, I need to be in windows right? So, I'm not able to execute this command. Is there a way to perform this action from bios/uefi (Asus computer) or from the ubuntu? (Ubuntu is booting fine)



      Or is there any other method? I'm open to all suggestions.



      Additional Info: Also, I installed grub2 and now I'm able to see grub bootloader after restart. Here, I get 2 options: ubuntu and windows (from sda2). If I select Ubuntu, ubuntu loads fine. But if I select windows, I get an error saying invalid signature



      Edit 01:
      I ran boot-repair tool. The details are in this paste ubuntu







      dual-boot grub2 uefi windows-10 boot-repair






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jan 18 at 13:48







      Nagabhushan S N

















      asked Jan 18 at 13:20









      Nagabhushan S NNagabhushan S N

      1338




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